312 bulletin: museum of comparative zoology. 



Marked on the plan of C muggenhurgi, C. dolobratus and the species of 

 Dypsocus. Head brown; antennae black, except the basal joints which are 

 reddish; head flattened, finely short haired; femora yellowish, tibiae more 

 brown, especiallj' at tips, tarsi dark at tips, rest pale. Wings rather slender, 

 with broad black stripe, leaving behind a narrow hyaUne strip over ends of the 

 posterior cells, and the cells on the front margin beyond stigma hyaline, the 

 stigma wholly dark, areola postica nearly hyaline. Radial sector and median 

 vein united for some distance, areola postica very small, little longer than 

 high, stigma moderately long, almost acute behind, apical side short. Hind 

 wings mostly brown. 



Length 3 inm. 



Nearest to C. dolobratus; differs in the stigmal markings, and 

 shorter stigma, and antennae less heavy. 



Allopsocus, gen. nov. 



Group of PsyHipsocus, TapineUa, etc. Body rather broad and flat. Head 

 broad, eyes small, bare, ocelli three, antennae with third and fourth joints long, 

 beyond sinaU indistinct joints. Wings broad and rounded; radius ends 

 blindly, thus no stigma, radial sector arises at right angle to radius, once 

 forked; median vein and radial sector connected by a short cross- vein; no 

 branches to median, nor to cubitus; anal and axillary veins unite in the 

 margin, veins and margin of wing ciliate. In the fore wing there is a narrow 

 posterior outer margin, not traversed by veins, this space is hyaline, while the 

 rest of wing is dark. Hind wings (Plate 1, fig. 10). 



Type. — A. marginalis, sp. nov. 



Allopsocus marginalis, sp. nov. 



Type.— M. C. Z. 10,786. Philippines — Luzon : Mt. Makihng 

 (C. F. Baker). 



Head whitish, labrum black, under side of head with a dark mark on each 

 side, antennae whitish, third and fourth joints with long bristly hair, mostly 

 on inner side, head above with scattered bristly hair; thorax in front pale, 

 pleura dark; front legs pale, middle legs with dark femora, hind legs wholly 

 dark; abdomen dark. Fore wings dark brown, with the exception of the 

 hyaline or whitish narrow outer posterior margin. Veins darker brown, with 

 few hairs, more numerous on margin of wing. Hind wings slightly f umose all 

 over. Venation (Plate 1, fig. 10). 



Length 2.5 mm. 



